An empty small bag.
An empty small bag which can be filled with 4 stone weight of sand, gravel or chips. Bought on its own as an empty bag.
Blocks
The bigger thicker blocks up from the 4"
Gravel
Clause 804
Quarry Products
Plastering sand
Screenings-Very dusty gravel
Drainage stone-small smooth rounded stone
Chips
Aggregate mix
Regular sized blocks used for most building jobs.
A much bigger block with a cavity/hole going through the center.